Prasanth Jayachandran created HIVE-11496:
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Summary: Better tests for evaluating ORC predicate pushdown
Key: HIVE-11496
URL: https://issues.apache.org/jira/browse/HIVE-11496
Project: Hive
Issue Type: Improvement
Affects Versions: 1.3.0, 2.0.0
Reporter: Prasanth Jayachandran
Assignee: Prasanth Jayachandran
There were many regressions recently wrt ORC predicate pushdown. We don't have
system tests to capture these regressions. Currently there is only junit tests
for testing ORC predicate pushdown feature. Since hive counters are not
available during qfile test execution there is no easy way to verify if ORC PPD
feature worked or not. This jira is add a post execution hook to print hive
counters (esp. number of input records) to error stream so that it will appear
in qfile test output. This way we can verify ORC SARG evaluation and avoid
future regressions.
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